v1.10

• use a custom lockfile implementation for single instance check in Linux (issue #27)
• print reason when exiting program due to another instance already running (issue #27)
• fix setting program to run at startup in newer Windows (issue #28)
• tweak escaping special characters for regex in heatmap page application search
• create new database file with default ownership permissions in Linux
• bundle licenses for included third-party software in released binaries
• exclude blank database from source distributions, to avoid overwriting it on upgrade